Tim Nikias wrote:
>
> radius -90 ?! shouldn't that normally be something like radius >0?

Yes, normally. This is advanced stuff :) It's in the manual
but -90 is needed to enable cosine distribution for the spot light.
It's needed to simulate how the brightness and projected area of
planar diffuse source change as a fuction of viewing angle.


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Kari Kivisalo

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